Find the equation of the circle whose center and radius are given. center ( 7, -3), radius = sqrt. 7

since both sides equal, there are infinitely many olutions.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply

i think the answer is b